# Note: This dropin only works with kubeadm and kubelet v1.11+
[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --volume-plugin-dir=PATH_TO_FLEXVOLUME"
Environment="KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml"
# This is a file that "kubeadm init" and "kubeadm join" generates at runtime, populating the KUBELET_KUBEADM_ARGS variable dynamically
EnvironmentFile=-/var/lib/kubelet/kubeadm-flags.env
# This is a file that the user can use for overrides of the kubelet args as a last resort. Preferably, the user should use
# the .NodeRegistration.KubeletExtraArgs object in the configuration files instead. KUBELET_EXTRA_ARGS should be sourced from this file.
EnvironmentFile=-/etc/sysconfig/kubelet
# Workaround boo#1171770 by setting required sysctl parameters on kubelet start (Toggle off and on to ensure all ethernet devices are refreshed)
ExecStartPre=/usr/sbin/sysctl net.ipv4.ip_forward=0
ExecStartPre=/usr/sbin/sysctl net.ipv6.conf.all.forwarding=0
ExecStartPre=/usr/sbin/sysctl net.ipv4.ip_forward=1
ExecStartPre=/usr/sbin/sysctl net.ipv6.conf.all.forwarding=1
ExecStart=
ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS